﻿/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*  Copyright (c) 2016 xiongziliang <771730766@qq.com>
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv_errno.h"
#include <stdio.h>
#include <stdlib.h>
#if defined(_WIN32)
#include <WinSock2.h>
#include <Windows.h>
#else
#include <errno.h>
#endif // defined(_WIN32)


static const char* uv__unknown_err_code(int err) {
	static char buf[32];
	snprintf(buf, sizeof(buf), "Unknown system error %d", err);
	return buf;
}

#define UV_ERR_NAME_GEN(name, _) case UV_ ## name: return #name;
const char* uv_err_name(int err) {
	switch (err) {
		UV_ERRNO_MAP(UV_ERR_NAME_GEN)
	}
	return uv__unknown_err_code(err);
}
#undef UV_ERR_NAME_GEN


#define UV_STRERROR_GEN(name, msg) case UV_ ## name: return msg;
const char* uv_strerror(int err) {
	switch (err) {
		UV_ERRNO_MAP(UV_STRERROR_GEN)
	}
	return uv__unknown_err_code(err);
}
#undef UV_STRERROR_GEN


int uv_translate_posix_error(int err) {
	if (err <= 0) {
		return err;
	}
	switch (err) {
		//为了兼容windows/unix平台，信号EINPROGRESS ，EAGAIN，EWOULDBLOCK，ENOBUFS 全部统一成EAGAIN处理
	case ENOBUFS://在mac系统下实测发现会有此信号发生
	case EINPROGRESS:
	case EWOULDBLOCK: err = EAGAIN; break;
	default:
		break;
	}
	return -err;
}

int get_uv_error(bool netErr) {
#if defined(_WIN32)
	auto errCode = netErr ? WSAGetLastError() : GetLastError();
	switch (errCode) {
	case ERROR_NOACCESS:                    return UV_EACCES;
	case WSAEACCES:                         return UV_EACCES;
#if defined(ERROR_ELEVATION_REQUIRED)
	case ERROR_ELEVATION_REQUIRED:          return UV_EACCES;
#endif //ERROR_ELEVATION_REQUIRED
	case ERROR_ADDRESS_ALREADY_ASSOCIATED:  return UV_EADDRINUSE;
	case WSAEADDRINUSE:                     return UV_EADDRINUSE;
	case WSAEADDRNOTAVAIL:                  return UV_EADDRNOTAVAIL;
	case WSAEAFNOSUPPORT:                   return UV_EAFNOSUPPORT;
	case WSAEWOULDBLOCK:                    return UV_EAGAIN;
	case WSAEALREADY:                       return UV_EALREADY;
	case ERROR_INVALID_FLAGS:               return UV_EBADF;
	case ERROR_INVALID_HANDLE:              return UV_EBADF;
	case ERROR_LOCK_VIOLATION:              return UV_EBUSY;
	case ERROR_PIPE_BUSY:                   return UV_EBUSY;
	case ERROR_SHARING_VIOLATION:           return UV_EBUSY;
	case ERROR_OPERATION_ABORTED:           return UV_ECANCELED;
	case WSAEINTR:                          return UV_ECANCELED;
	case ERROR_NO_UNICODE_TRANSLATION:      return UV_ECHARSET;
	case ERROR_CONNECTION_ABORTED:          return UV_ECONNABORTED;
	case WSAECONNABORTED:                   return UV_ECONNABORTED;
	case ERROR_CONNECTION_REFUSED:          return UV_ECONNREFUSED;
	case WSAECONNREFUSED:                   return UV_ECONNREFUSED;
	case ERROR_NETNAME_DELETED:             return UV_ECONNRESET;
	case WSAECONNRESET:                     return UV_ECONNRESET;
	case ERROR_ALREADY_EXISTS:              return UV_EEXIST;
	case ERROR_FILE_EXISTS:                 return UV_EEXIST;
	case ERROR_BUFFER_OVERFLOW:             return UV_EFAULT;
	case WSAEFAULT:                         return UV_EFAULT;
	case ERROR_HOST_UNREACHABLE:            return UV_EHOSTUNREACH;
	case WSAEHOSTUNREACH:                   return UV_EHOSTUNREACH;
	case ERROR_INSUFFICIENT_BUFFER:         return UV_EINVAL;
	case ERROR_INVALID_DATA:                return UV_EINVAL;
	case ERROR_INVALID_PARAMETER:           return UV_EINVAL;
#if defined(ERROR_SYMLINK_NOT_SUPPORTED)
    case ERROR_SYMLINK_NOT_SUPPORTED:       return UV_EINVAL;
#endif //ERROR_SYMLINK_NOT_SUPPORTED
	case WSAEINVAL:                         return UV_EINVAL;
	case WSAEPFNOSUPPORT:                   return UV_EINVAL;
	case WSAESOCKTNOSUPPORT:                return UV_EINVAL;
	case ERROR_BEGINNING_OF_MEDIA:          return UV_EIO;
	case ERROR_BUS_RESET:                   return UV_EIO;
	case ERROR_CRC:                         return UV_EIO;
	case ERROR_DEVICE_DOOR_OPEN:            return UV_EIO;
	case ERROR_DEVICE_REQUIRES_CLEANING:    return UV_EIO;
	case ERROR_DISK_CORRUPT:                return UV_EIO;
	case ERROR_EOM_OVERFLOW:                return UV_EIO;
	case ERROR_FILEMARK_DETECTED:           return UV_EIO;
	case ERROR_GEN_FAILURE:                 return UV_EIO;
	case ERROR_INVALID_BLOCK_LENGTH:        return UV_EIO;
	case ERROR_IO_DEVICE:                   return UV_EIO;
	case ERROR_NO_DATA_DETECTED:            return UV_EIO;
	case ERROR_NO_SIGNAL_SENT:              return UV_EIO;
	case ERROR_OPEN_FAILED:                 return UV_EIO;
	case ERROR_SETMARK_DETECTED:            return UV_EIO;
	case ERROR_SIGNAL_REFUSED:              return UV_EIO;
	case WSAEISCONN:                        return UV_EISCONN;
	case ERROR_CANT_RESOLVE_FILENAME:       return UV_ELOOP;
	case ERROR_TOO_MANY_OPEN_FILES:         return UV_EMFILE;
	case WSAEMFILE:                         return UV_EMFILE;
	case WSAEMSGSIZE:                       return UV_EMSGSIZE;
	case ERROR_FILENAME_EXCED_RANGE:        return UV_ENAMETOOLONG;
	case ERROR_NETWORK_UNREACHABLE:         return UV_ENETUNREACH;
	case WSAENETUNREACH:                    return UV_ENETUNREACH;
	case WSAENOBUFS:                        return UV_ENOBUFS;
	case ERROR_BAD_PATHNAME:                return UV_ENOENT;
	case ERROR_DIRECTORY:                   return UV_ENOENT;
	case ERROR_FILE_NOT_FOUND:              return UV_ENOENT;
	case ERROR_INVALID_NAME:                return UV_ENOENT;
	case ERROR_INVALID_DRIVE:               return UV_ENOENT;
	case ERROR_INVALID_REPARSE_DATA:        return UV_ENOENT;
	case ERROR_MOD_NOT_FOUND:               return UV_ENOENT;
	case ERROR_PATH_NOT_FOUND:              return UV_ENOENT;
	case WSAHOST_NOT_FOUND:                 return UV_ENOENT;
	case WSANO_DATA:                        return UV_ENOENT;
	case ERROR_NOT_ENOUGH_MEMORY:           return UV_ENOMEM;
	case ERROR_OUTOFMEMORY:                 return UV_ENOMEM;
	case ERROR_CANNOT_MAKE:                 return UV_ENOSPC;
	case ERROR_DISK_FULL:                   return UV_ENOSPC;
	case ERROR_EA_TABLE_FULL:               return UV_ENOSPC;
	case ERROR_END_OF_MEDIA:                return UV_ENOSPC;
	case ERROR_HANDLE_DISK_FULL:            return UV_ENOSPC;
	case ERROR_NOT_CONNECTED:               return UV_ENOTCONN;
	case WSAENOTCONN:                       return UV_ENOTCONN;
	case ERROR_DIR_NOT_EMPTY:               return UV_ENOTEMPTY;
	case WSAENOTSOCK:                       return UV_ENOTSOCK;
	case ERROR_NOT_SUPPORTED:               return UV_ENOTSUP;
	case ERROR_BROKEN_PIPE:                 return UV_EOF;
	case ERROR_ACCESS_DENIED:               return UV_EPERM;
	case ERROR_PRIVILEGE_NOT_HELD:          return UV_EPERM;
	case ERROR_BAD_PIPE:                    return UV_EPIPE;
	case ERROR_NO_DATA:                     return UV_EPIPE;
	case ERROR_PIPE_NOT_CONNECTED:          return UV_EPIPE;
	case WSAESHUTDOWN:                      return UV_EPIPE;
	case WSAEPROTONOSUPPORT:                return UV_EPROTONOSUPPORT;
	case ERROR_WRITE_PROTECT:               return UV_EROFS;
	case ERROR_SEM_TIMEOUT:                 return UV_ETIMEDOUT;
	case WSAETIMEDOUT:                      return UV_ETIMEDOUT;
	case ERROR_NOT_SAME_DEVICE:             return UV_EXDEV;
	case ERROR_INVALID_FUNCTION:            return UV_EISDIR;
	case ERROR_META_EXPANSION_TOO_LONG:     return UV_E2BIG;
	default:                                return UV_UNKNOWN;
	}
#else
	return uv_translate_posix_error(errno);
#endif // defined(_WIN32)
}


const char* get_uv_errmsg(bool netErr) {
	return uv_strerror(get_uv_error(netErr));
}
